Beam lock



C. D. BROWN BEAM LOCK May 10, 1938.

Filed Aug. 24, 1937 INVENTOR. CAEL 0. BEOWN.

BY a

ATTORNEY.

Patented May 10, 1938 UNITED STATES I PATENT OFFICE Draper Corporation, poration of Mame Hopedale, Mass., at cor- Application August 24, 1937, SerialNo. 160,640

6 Claims.

The present invention pertains to machine frame supported bearings, and moreparticularly to the type of such bearings comprisingbeam locks for supporting the yarn beam in looms.

Beam locks of the type to which my invention applies commonly consist of a supporting member adapted to be attached to a loom frame and having an open bearing for receiving and supporting the gudgeon of a yarn beam, and a locking ,member for locking the gudgeon in the bearing. Such locking member is usually pivoted to the supporting member for pivotal movement away from the bearing, to permit removal of the yarn beam. As heretofore constructed, thepivotal axis of the locking member was parallel to the axis of the bearing so that the locking member could swing, and was adjustable, in a plane normal to the gudgeon.

Suchprior beam locks are subject to the disadvantages that the locking members usually will.

not properly fit the beam gudgeon unless very accurately constructed and machined, and that the, shapes of the members are such as to be difficult to cast properly. These and other disadvantages exist in such prior constructionspartly because the manner of pivoting and adjusting the locking members did not provide for compensation for certain of the inaccuracies usually found in the members when the latter were producedbi ordinary commercial methods of manufacture. In fact, the members were commonly. clamped together with their side faces in contact, that is, the faces normal to the axis of the bearing, and that served to accentuate such inaccuracies. This clamping of the side faces of the members together also contributed toward requiring shapes of the members which are difiicult to cast properly.

I propose to provide a yarn beam lock comprising a supporting member and locking member for the beam gudgeon as aforesaid, but having such locking member pivotally and adjustably supported on an axis extending transversely of the axis of the gudgeon whereby the locking member may be adjusted to compensate for the aforesaid inaccuracies in the members.

I further propose to provide a yarn beam lock comprising such supporting member and locking member, wherein the supporting member shall have a substantially flat face positioned to one side of the bearing in a plane parallel to the axis of the bearing, and wherein thelocking member shall be adjustable on said face longitudinally of andtoward and away from the bearing, whereby said members may be comparatively simple and easy to manufacture without expensive machining operations.

The foregoing and other objects of the invention are accomplished in the construction shown on the accompanying drawing, of which:

Fig. 1 is a view in rear elevation of part of a loom, showing the preferred embodiment of the invention; and

Fig. 2 is a view of the same as seenfrom one side of the loom.

The conventional loom frame includes right and left hand loom sides of which I have shown on the drawing only part of a left hand loom side I which has a rear vertical flange 2 and a horizontal flange 3. A yarn beam 4 is located at the back of the loom and extends widthwise thereof. The beam 4 may be of any suitable construction for containing a supply of warp yarn W to be used by the loom in weaving. Such beam is provided at each end with a gudgeon by which the beam is rotatably supported on the loom frame, only the gudgeon 5 at the left hand end of the beam being shown. on the drawing. Each of the beam gudgeo'ns islsupported in a yarn beam look, socalled, which is constructed in accordance with the present invention. Only the beam look at the left hand side of the loom is shown, the other beam lock on the loom being preferably of similar construction.

The beam lock shown on the drawing comprises a supporting member 6 and a locking member I. These members are of such shape that they may be .readily and efficiently cast by ordinary commercial foundry methods. The supporting member 6 consists of a unitary body the main portion of which comprises a vertical plate 8. The plate 8 is provided with a laterally projecting lug 9 adapted to rest on the horizontal flange 3 of the loom side. The plate is further provided with a plurality of holes I0, I!) for receiving fastening devices such as bolts l I, I I, whereby the supporting member is adapted to be attached to the inner face of the loom side I.

The supporting member 6 is provided with an open bearing for receiving and supporting the beam gudgeon 5. To this end, the plate 8 may have a lug I2 which extends laterally inwardly of the loom, i. e., toward the yarn beam, and a semi-bearing I3 is formed in this lug and in the top edge M of the plate 8. The axis of the bearing l3 extends widthwise of the loom, and the bearing surface may or may not be machined or otherwise finished, as desired. The upper side of the bearing I3 is open, so that in this embodiment the upper side of the gudgeon 5 is exposed.

The supporting member 6 is provided with a face 55 which is substantially flat and which is positioned to one side of the bearing l3 in a plane parallel to the axis of the bearing. As shown, the face I5 may constitute the rear face of an arm 86 which projects upwardly from the edge i i in front of the bearing [3, the arm and face being substantially vertical. The locking member I is supported on the arm IS.

The locking member I is provided with a surface ll engaging the exposed side of the gudgeon 5 for locking the latter in the bearing l3. Preferably, the surface l'! is curved and extends along the gudgeon an appreciable distance, thus providing a bearing surface which is diametrically opposite the bearing IS. The locking member shown has an arm !8 which is offset forwardly and extends upwardly parallel to the face IS. The front face of the arm I 8 fits against the face it and for convenience in fitting may be provided with small projections [9 which can be readily filed or ground to provide the desired fit.

The locking member 7 is preferably pivotally supported on the arm 16, as by means of a bolt 2B] which passes through the arms l6 and I8. This bolt extends horizontally, normal to the arms and to the face l5, and thus extends transversely of the beam gudgeon. It will be apparent that when the bolt 29 is loosened the locking member I may swing on the bolt to adjust the surface ll into parallelism with the beam gudgeon. This adjustment is important because without it slight inaccuracies in the parts would probably result in only one end of the surface I! touching the beam gudgeon.

The locking member I is adjustable along the face i5 toward and away from the bearing l3. To this end, at least one but preferably both of the arms l6 and it are provided with inclined slots. As shown, the slot 2! in arm l6 and slot 22 in arm 58 are oppositely inclined relative to the horizontal, the slot 2! being inclined inwardly and downwardly and the slot 22 being being inclined outwardly and downwardly. These slots constitute registering openings through which the bolt 28 passes. Either the bolt 20 or looking member I may be moved longitudinally of the gudgeon 5 to adjust the locking member toward or away from the bearing l3. The opposite inclination of the slots provides ample adjustment while permitting the angle of the slots to be such that upward pressure of the beam gudgeon on the locking member will not force the latter out of adjusted position.

The bolt 25!, when tightened, serves to support the locking member I by clamping the same to the face l5 of arm Hi. When this bolt is loosened and moved to the upper end of slot 2|, the locking member is raised sufficiently that it may be moved clockwise about the bolt to free the beam gudgeon. Thus, the yarn beam may be installed in or removed from the loom without removing the bolt 29.

Having fully disclosed the. preferred embodiment of my invention, I claim:

1. In a yarn beam lock for looms, a supporting member adapted to be attached to a loom frame, said member having an open bearing for receiving and supporting the gudgeon of a yarn beam, a locking member having a surface engaging the exposed side of the beam gudgeon, said locking member being pivoted on said supporting member for adjustment about an axis extending transversely of the gudgeon, whereby said surface may be adjusted into parallelism with the gudgeon,

and means for adjusting said locking member toward and away from the gudgeon.

2. In a yarn beam lock for looms, a supporting member adapted to be attached to a loom frame, said member having an open bearing for receiving and supporting the gudgeon of a yarn beam, said member having an arm positioned to one side of said bearing and extending transversely thereof, a locking member having a curved surface engaging the exposed side of the beam gudgeon for locking the latter in said bearing, said locking member being pivoted on said arm for adjustment about an axis extending transversely of the gudgeon, whereby said curved surface may be adjusted into parallelism with the gudgeon, and means for adjusting the said locking member on said arm toward and from said bearing.

3. In a yarn beam lock for looms, a supporting member adapted to be attached to a loom frame, said member having an open bearing in its upper edge for receiving and supporting the gudgeon of a yarn beam, an arm on said member, said arm projecting upwardly from said edge and being entirely in front of said bearing, a locking member having a curved surface engaging the upper side of the beam gudgeon for locking the latter in said bearing, said locking member having a forwardly offset arm extending upwardly parallel to the first said arm, at least one of said arms having a slot inclined longitudinally of the beam gudgeon at an acute angle to the horizontal, and a bolt passing through said slot and the other of said arms transversely of the beam gudgeon, said locking member being pivotally supported by said bolt for adjustment about the axis thereof and said bolt being adjustable longitudinally of said slot to thereby adjust said locking member toward and from said bearing.

4. In a yarn beam lock for looms, a supporting member adapted to be attached to a loom frame, said member having an open bearing in its upper edge for receiving and supporting the gudgeon of a yarn beam, said member having an arm extending upwardly from said edge in front of said bearing, the rear face of said arm being substantially flat and being positioned in a vertical plane parallel to the axis of said bearing, a locking member engaging the upper side of the beam gudgeon for locking the latter in said bearing, said locking member having an upwardly extending arm fitting against said fiat face, there being a horizontally inclined slot in one of said arms, and a bolt passing through said slot and the other of said arms normal to said face, for adjustably clamping said locking member to said fiat face.

5. In a yarn beam lock for looms, a supporting member adapted to be attached to a loom frame, said member having an open bearing in its upper edge for receiving and supporting the gudgeon of a yarn beam, a locking member having a curved surface engaging the upper side of the beam gudgeon for locking the latter in said bearing, said members having parallel arms extending upwardly in front of said bearing, the contiguous faces of said arms being vertical and parallel to the axis of said bearing, one of said arms having a horizontally inclined slot and the other having an opening registering with said slot, and a bolt passing through said slot and said opening for adjustably securing said locking member to the arm on said supporting member.

6. In a yarn beam lock for looms, a supporting member having an open bearing in its upper edge for receiving and supporting the gudgeon of a yarn beam, an arm on said member, said arm extending upwardly from said upper edge in front of said bearing and having its rear face in a vertical plane parallel to the axis of said bearing, a locking member having a curved surface engaging the upper side of the beam gudgeon for locking the latter in said bearing, said locking member having a forwardly offset arm extending upwardly parallel to said face and in engagement therewith, said arms having oppositely inclined slots, and a bolt passing through said slots for adjustably clamping said locking member to said arm on said supporting member.

CARL D. BROWN. 

